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...error C2065: 'sum' : undeclared identifier
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The OutputStream class referenced in outputstream.cpp isn't being recognised. As far as i can tell it's defined in the audiere.h header file in the audiere project, and the #include directive at line 2 of outputstream.cpp should be including that file.. Two things to try in VC++: In line 8 of outputstream.cpp double-click on OutputStream and then right-click, and on the context menu select Go ...
编号：C2065 直译：标识符"xxxx"未定义。 错误分析： 首先，解释一下什么是标识符。标志符是程序中出现的除关键字之外的词，通常由字母、数字和下划线组成，不能以数字开头，不能与关键字重复，并且区分大小写。
The most common causes of C2065 are that the identifier hasn't been declared, the identifier is misspelled, the header where the identifier is declared isn't included in the file, or the identifier is missing a scope qualifier, for example, cout instead of std::cout.
We learn about the compiler error C2065 in C++. We look at some of the common reasons for this error. We also look at possible solutions.
如果忘记包含相关的头文件，编译器将无法找到标识符的声明，从而导致未声明的标识符错误。如果标识符的拼写与其声明不匹配，编译器将无法找到正确的声明，从而导致未声明的标识符错误。因此，检查标识符的拼写是解决此错误的重要步骤。在c++编程中，错误c2065是一种常见的编译错误，它 ...
运行delphi 7发现这个问题，总是不能解决。 主要分类两步来解决： 1：定义这个 OpenDialog1: TOpenDialog; 2：delphi 中有一个Dialogs 组件 最好是将每一个图标均放置在，Form1中这样用到那一个，就自然不同再定义呢： 另外附带一点本文福利，这些在编写delphi程序中如果用到这些功能都需要定义： OpenDialog1:...
Somebody has decided that you shouldn't be using the tcscat, tcscpy, sprintf or strcpy functions. They went into your header files and replaced the definitions of these functions with big long nonexistent identifiers like _tcscat_instead_use_String CbCat_or_S tringCchCa t that cause compile and/or linking errors. The best way to deal with this is probably to rewrite your code to use the ...
You've got two headers trying to include each other. Remove any #include that you don't need; and try to replace them with forward declarations where possible.. In particular, find a way to stop GameDataNetworkHelper.h and RandomNumber.h from including each other. Unless RandomNumber is doing something really strange, it shouldn't depend on games, data, or networks.
Maybe there is no #include "Restrict.h" in this file. (If there is also an #include "pch.h", then put your declarations after that line).
If you are compiling for 32-bit Windows,... ShellExecute((HWND)this->Handle.ToInt32(), ... This is using the knowledge that a handle is just a 32 bit value. Some people do the same using ToPointer(), which also works with 32-bit Windows.